for Safari (6.0 or higher)
Install (FREE Download)
After you click Install (FREE download), you will be prompted to open or to save the file. Click Open.
An installation confirmation window will appear. Press Install. Now the installation of the extension is completed.
Use Dr.Web LinkChecker
To use the extension, right click on the link that you want to follow. In the context menu, click Check the link with Dr.Web Anti-Virus. Wait for scanning results.
Click on the gear image on the right from the address bar, select Settings-> Extensions. In the installed extensions list look for Dr.Web LinkChecker Scans HTML links with Dr.Web Online Anti-Virus, highlight it and click Uninstall, then confirm this action by pressing the Uninstall button in the confirmation dialogue.